CARDUACEAE 1393 
101. A. Chapmanii T. & G. Plant perennial: stem rigid, arising from a short 
caudex, PE. usually n few slender or nearly filiform branches above: 
leaves mainly crowded on the caudex, 1-3 dm. long, glabrous, the linear or 
linear-spatulate blades longer or shorter than the pid Mr d ike base, en- 
tire, obseurely veined in dr ; lower eauline-leaves nea ike the basal, the 
upper gradually reduced to subite flifoun erect ales, d subulate = 
MER UA heads E solitary at the ends of the branches; involu d p 
panu 7—8 mm. high; braets firm, e ne -lanceolate to broadly linear im 
em oblanceolate b acute, sometimes abru uptiy Pu inted: ray-flowers nu- 
merous; ligul s 1.5-2 ¢ m. long, ilet. a e glabrous.—Pineland swamps, Ap- 
alachicola River region, N Fla. and fare in aa. Fla.—Fall. 
E A. tenuifolius L. Plant penc glabrous and fleshy. Stem 3-6 dm 
all, flexuous, striate, d least when dry, sparingly and loosely br anched: cauline 
en linear, 5-15 e ong, he e, sessile, or slightly elasping at the base, the 
lowest jio Tin those of the branches minute, seale-like, appressed : 
heads rather few, 12-25 mm. broad, terminating the bra nehes: involucre tur- 
binate, about 8 mm. high; bracts lanceolate, acuminate or mucronate, glabrous, 
green on the back or tips, appressed, imbri cate in dn t 5 series, the o uter 
shorter: ray-flowers numerous; ligules longer than t pi. pale- purple 
nearly e: pappus tawny; achene hispid- pubescent, o-nerved.—Salt n d 
coast of Fla. to Miss. and Mass.—Sum.-fal 
103. A. s El. Plant annual, glabrous, fleshy: stem 3-12 dm. tall, ide 
usually much-branche n Du M. usually divergent: cauline leaves lin 
to linear- TORRES te, ong, entire, sessile, aeute or ud Or the 
lower narrowly ell pie, ne mm. wide, usually petioled, ed of the branches 
subulate: heads nu merous, panieled, about 1 em. broa s d 
about 6 mm. high; braets linear- subulate, cde ed, imbrie or 4 series: 
ray-flowers und ADS hani those of the disk; ligule es ced E 4m 
long, longer than the pappus acie somewhat. pubescent.—Mcist or wet soil, 
especially in Bon rains, various provi me Fla. to Tex., Kans., an nd 
S. C.—Sum.-fall. 
104. A. inconspi icuus Less. PEN annual, glabrous or obscurely glandular in 
the p ta stem mostly 1 m. tall or less, rather copiously ia above, 
the and branches flexuous: alee leaves mostly 1-1.5 dm ; blades 
nm or nearly. so, varying to broadest above or a. the aed aeute, 
shallowly oae those of the branches much n wer: heads much smaller 
than those A. exilis and A. su ae ie tus: mn dec 3.5-5 m 
high; ere linear-lanceolate to rowly linear: ray-flowers 20- more 
numerous than the pepe da ; ligules mostly pde -lilac, about 2 m ; long— 
Edges of ps d salt- marshes, Key West, Fla.—(W. I.)—Fa ae — 
Differs from A. pm “th umerous r ray-flowers with small — and- n 
A. subulatus in the pm toothed blades of the cauline leaves 
105. A. subulatus Michx. Plant annual, glabrous and fleshy: stem 3-18 dm. 
tall, paniculately el flexuous above, slightly Ed sometimes 25 mm. in 
diameter at the base, but usually smaller: cauline leaves linear- aeons: 5-8 
long, acute, aie sessile by a broad or slightly clasping bas , those of 
Nets oy small and s ubulate: oie adis s, 6-10 mm 
. hi 
ee er shorter: ray-flowers 
more numerous ree: the disk flowers: ae bd scarcely exceeding the 
nearly white, soft, copious pappus : acher ne compressed, minutely pubescent.— 
Salt marshes, coast of Fla. to Ala., and N. H.—5u —fall. 
A. spinosus Benth. Stem woody at the base, divided into striate pliable 
D. green branches, 1-2.5 m. tall, these branches paniculate: leaves incon- 
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